Once upon a time there was a young rooster, a fowl lad to be sure, endowed, like all the fabled protagonists of old with the indefinite moniker "Chicken Little".Who was he?What did his mother call him?It's not important.He was struck on the head by an acorn, thereby proclaiming: "the sky is falling"-an absurd conclusion given that it was a cloudless day, not a drop of rain to be felt.